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Income Taxes - Additional Information (Detail) In Thousands, unless otherwise specified | 12 Months Ended |  |  | 12 Months Ended |
--- | --- | --- | --- | --- | ---
Dec. 31, 2013 USD ($) | Dec. 31, 2012 USD ($) | Dec. 31, 2011 USD ($) | Dec. 31, 2013 2015 [Member] USD ($) | Dec. 31, 2013 2023 [Member] USD ($) | Dec. 31, 2013 Intellectual Property [Member] USD ($) | Dec. 31, 2012 Intellectual Property [Member] USD ($) | Dec. 31, 2013 Foreign Subsidiary [Member] USD ($) | Dec. 31, 2013 Foreign Subsidiary [Member] EUR (€) | Dec. 31, 2013 Foreign Subsidiary [Member] Intercompany Dividend [Member]
Operating Loss Carryforwards [Line Items] |  |  |  |  |  |  |  |  |  |
Intercompany dividend | $ 30,752 |  |  |  |  |  |  | $ 30,752 | € 22,600 |
Statutory tax rate | 35.00% | 34.00% | 34.00% |  |  |  |  |  |  |
Long-term deferred tax assets | 6,334 | 2,565 |  |  |  |  |  |  |  |
Current deferred tax liabilities | 726 | 543 |  |  |  |  |  |  |  |
Exchange rate |  |  |  |  |  |  |  |  |  | 1.36
Unremitted foreign earnings available for distribution | 46,012 |  |  |  |  |  |  |  |  |
Deferred tax liability | 380 |  |  |  |  |  |  |  |  |
US dividend income, net of foreign tax credit | 212 |  |  |  |  |  |  |  |  |
Amount of Unremitted foreign earnings permanently invested | 50,398 |  |  |  |  |  |  |  |  |
U.S. net operating loss carryforwards | 10,586 |  |  |  |  |  |  |  |  |
U.S. tax deductions for employee stock option gains | 9,741 |  |  |  |  |  |  |  |  |
Amount of stock option tax benefit credited to additional paid-in capital. | 3,318 |  |  |  |  |  |  |  |  |
U.S. foreign tax credit | 5,058 |  |  |  |  |  |  |  |  |
Foreign tax credit carryforwards expire amount |  |  |  | 944 | 4,114 |  |  |  |  |
Foreign NOL carryforwards | 5,093 |  |  |  |  |  |  |  |  |
Other Foreign Deductible carryforwards | 3,898 |  |  |  |  |  |  |  |  |
Expiry Date of other deductible carryforwards | 2016-2020 |  |  |  |  |  |  |  |  |
Valuation allowance for deferred tax assets |  |  |  |  |  |  |  | 2,399 |  |
Net increase (decrease) change in the valuation allowance | 115 | 196 | (5,625) |  |  |  |  |  |  |
Tax benefit reserve | $ 2,399 | $ 2,284 |  |  |  | $ 560 | $ 560 |  |  |

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